CN219436483U - Dampproofing heat dissipation switch board - Google Patents

Abstract

The utility model relates to the technical field of power distribution cabinets and discloses a dampproof heat dissipation power distribution cabinet which comprises a power distribution cabinet body, wherein L-shaped air inlet pipelines are arranged at the top and one side wall of the power distribution cabinet body, and L-shaped air exhaust pipelines are arranged at the bottom and the other side wall of the power distribution cabinet body; the air inlet port of the air inlet pipeline is positioned at the bottom end part of the air inlet pipeline, and the air inlet port is provided with an air inlet cover plate; the top of the power distribution cabinet body is provided with an air inlet which is communicated with an air inlet pipeline, and the air inlet is provided with an air inlet fan; an air outlet is formed in the bottom of the power distribution cabinet body and communicated with an air exhaust pipeline, an air exhaust fan is arranged at the air outlet, an air exhaust pipe orifice is formed in one side of the top of the air exhaust pipeline, and an air outlet cover plate is arranged at the air exhaust pipe orifice; the air inlet pipeline is provided with a filtering part and a moisture absorption part. The utility model can perform good heat dissipation when the temperature of the power distribution cabinet is too high, dehumidify, filter and remove dust on the air entering the power distribution cabinet, and can close the air inlet pipeline and the air exhaust pipeline when the temperature of the power distribution cabinet is normal.

Description

Dampproofing heat dissipation switch board

Technical Field

The utility model relates to the technical field of power distribution cabinets, in particular to a dampproof heat dissipation power distribution cabinet.

Background

At present, the power distribution cabinet is very widely used, and the body and the shadow of the power distribution cabinet can be seen in production places, offices, processing workshops, casting plants, forging plants, boiler rooms, wood houses and the like. The switch board is the equipment that is necessary in circuit transportation and the control system, and the inside arranges a large amount of circuits and circuit components, and it is serious to generate heat, and traditional switch board ventilation performance is poor, and the switch board is generated heat easily and is led to the ageing scheduling problem of circuit, influences the connection reliability between the circuit, brings very big obstacle for the detection and the maintenance of switch board.

In the prior art, most of power distribution cabinets with heat dissipation function are provided with air inlets at the top of the power distribution cabinet, and air outlets are provided at the bottom of the power distribution cabinet, for example, the patent number CN218634644U of the utility model discloses an elevator power distribution cabinet with cooling and dehumidifying functions, and the elevator power distribution cabinet with cooling and dehumidifying functions aims at solving the technical problem that the cooling and dehumidifying effects cannot be effectively achieved in the prior art. The elevator distribution box comprises a distribution box main body; the air distribution groove has been seted up to the inboard of block terminal main part, and the upper end of block terminal main part is provided with the subassembly that admits air, and the inlet port has been seted up to the inboard of block terminal main part, and the bottom fixed mounting of block terminal main part has the guide vane. This elevator block terminal with cooling dehumidification function only need drive cold wind through the subassembly that admits air and lead into the gas distribution groove in, distribute evenly cold wind through the gas distribution groove, cold wind carries out cold and hot replacement to the inside of block terminal main part through the inlet port, and steam is led to the connecting pipe through the direction fill in, adsorbs a part of steam through drying component, exports another part of steam and hot-blast through exhaust assembly to the effective cooling dehumidification of elevator block terminal has been realized. However, according to the principle that hot air rises upwards and cold air sinks, the air inlet pipe is located at the top of the power distribution cabinet, the exhaust pipe is located at the bottom of the power distribution cabinet, hot air exhausted by the power distribution cabinet is led to enter the power distribution cabinet from the air inlet pipe in the rising process, the heat dissipation effect of the power distribution cabinet is affected, and particularly when the power distribution cabinet is applied to occasions with narrow space or unsmooth air circulation, the influence is larger. In addition, this patent sets up drying component in blast pipe one side, can't effectively dehumidify the switch board, and dehumidification effect is not good enough. Furthermore, foreign matters such as dust easily enter the power distribution cabinet through the air inlet pipe, line damage is easy to occur, and the rainproof effect of the power distribution cabinet is poor.

Disclosure of Invention

Accordingly, the present utility model is directed to a moisture-proof heat dissipation power distribution cabinet, which can perform good heat dissipation when the temperature of the power distribution cabinet is too high, dehumidify, filter and remove dust air entering the power distribution cabinet, and close an air inlet pipeline and an air exhaust pipeline when the temperature of the power distribution cabinet is normal, so as to isolate dust, thereby solving the problems mentioned in the background art.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the dampproof heat dissipation power distribution cabinet comprises a power distribution cabinet body, wherein an air inlet pipeline which is arranged in an L-shaped structure is arranged at the top and one side wall of the power distribution cabinet body, and an air exhaust pipeline which is arranged in an L-shaped structure is arranged at the bottom and the other side wall of the power distribution cabinet body; the air inlet port of the air inlet pipeline is positioned at the bottom end part of the air inlet pipeline, and the air inlet port is movably provided with an air inlet cover plate; the top of the power distribution cabinet body is provided with an air inlet which is communicated with the air inlet pipeline, and the air inlet is provided with an air inlet fan; the power distribution cabinet comprises a power distribution cabinet body, and is characterized in that an air outlet is formed in the bottom of the power distribution cabinet body and communicated with an air exhaust pipeline, an air exhaust fan is arranged at the air outlet, an air exhaust pipe orifice is formed in one side of the top of the air exhaust pipeline, and an air outlet cover plate is movably arranged at the air exhaust pipe orifice; the air inlet pipeline is respectively provided with a lower layer plate and an upper layer plate with a reverse-character structure from bottom to top, and the air inlet pipeline is respectively inserted with a filter component and a moisture absorption component which are positioned at the top of the lower layer plate and the top of the upper layer plate. The filter component and the moisture absorption component are magnetically connected with the inner wall of the air inlet pipeline.

Further, the filter component comprises a filter screen, an outer end plate I is fixed at the outer end part of the filter screen, a tail plate is fixed at the inner end part of the filter screen, and a sealing gasket I is arranged on one side of the inner side face of the outer end plate I.

Further, the moisture absorption part comprises a box body, an opening is formed in the top of the box body, a drying bag can be placed in the box body, a slot is formed in one side of the box body, and the slot can be inserted into a plugboard with a net structure positioned at the top of the box body; an outer end plate II is fixed at the outer end part of the box body, and a sealing gasket II is arranged on one side of the inner side surface of the outer end plate II.

Further, the top of outer end plate two is provided with cardboard first, the box body is kept away from the one end of outer end plate two is provided with cardboard second that is L type structure, cardboard first with the moisture absorption sponge can be placed to cardboard second's bottom.

Further, the top surface of the top of the exhaust pipeline is provided with a baffle, the inner side of the baffle is provided with a baffle plate of an L-shaped structure fixed at the top of the exhaust pipeline and the side wall of the baffle plate, and the top of the baffle plate is provided with an inner air outlet.

Further, the bottom of the partition plate is in an arc-shaped structure, the side wall of the exhaust pipeline is provided with a water outlet hole, and the water outlet hole is positioned on one side of the bottom of the partition plate.

Further, two mounting plates are arranged at intervals at the bottom of the power distribution cabinet body, a bidirectional screw is rotationally connected between the two mounting plates, two sliding blocks are connected to the bidirectional screw in a threaded mode, a second fixing block is arranged on one side of each sliding block, one end of a connecting rod is hinged to the second fixing block, two first fixing blocks are respectively arranged on two sides of the inner end portion of the air inlet cover plate, the other end portion of the connecting rod is rotationally connected with the first fixing blocks, one side end portion of the bidirectional screw penetrates through the mounting plates and is fixedly provided with a first gear, the mounting plates are located on one side of the first gear and are provided with a fixed shaft, the second gear is rotationally connected to the fixed shaft, and the first gear is in meshed connection with the second gear; the mounting plate is far away from the inboard motor that is fixed with of one end of gear one, the drive shaft of motor runs through the mounting plate and is fixed with the gear three, the gear three with gear two meshing is connected.

Further, the bottom both sides of air inlet pipeline are provided with the slide rail respectively, the air inlet apron removes along the slide rail.

Further, the top both sides of exhaust duct are provided with the fixed plate respectively, the outer tip of fixed plate rotates to be connected with the air-out apron, the top of air-out apron is fixed with the connecting plate, the inside of air inlet duct is provided with electric telescopic handle, its output shaft runs through the lateral wall of air inlet duct and with the connecting plate rotates to be connected.

Further, the inner top of the power distribution cabinet body is provided with an air dispersing plate with an arc-shaped structure, and a plurality of uniformly distributed air dispersing holes are formed in the air dispersing plate.

Advantageous effects

Compared with the prior art, the utility model at least comprises the following advantages:

1. the air inlet cover plate can be driven to open or close the air inlet port of the air inlet pipeline by the cooperation of the mounting plate, the bidirectional screw rod, the sliding block, the connecting rod, the first fixed block, the second fixed block, the air inlet cover plate, the first gear, the second gear, the third gear and the motor. The cooperation of fixed plate, connecting plate, air-out apron, electric telescopic handle and output shaft can drive the air-out apron and open or close the mouth of pipe of airing exhaust for when the switch board normal atmospheric temperature, can close air inlet pipeline and exhaust duct, isolated dust reduces foreign matter, dust and gets into the inside possibility of switch board body. 2. When the switch board temperature is too high, can open air inlet port and exhaust mouth of pipe and open into fan and exhaust fan simultaneously and carry out the good heat dissipation to the inside of switch board body, and filter part and moisture absorption part can dehumidify, filter the dust removal to the air that gets into the switch board. 3. The moisture absorption part and the filter part are inserted into the air inlet pipeline in an inserting mode and are magnetically connected with the air inlet pipeline, so that the replacement is convenient. 4.L type structure air inlet pipeline prevents rainwater from entering the inside of the power distribution cabinet body; the baffle, the baffle and the water outlet inside the exhaust pipeline are arranged, so that rainwater is prevented from entering the exhaust pipeline to cause accumulated water of the exhaust pipeline, and the rainproof effect of the power distribution cabinet is realized, thereby solving the problem that the rainproof capability of most power distribution cabinets in the prior art is poor when the power distribution cabinet is provided with a heat radiation system. 5. The air inlet port of air inlet pipeline sets up in the switch board bottom, and exhaust pipe mouth of pipe of exhaust pipeline sets up at the top of switch board, and certain height is staggered to both, avoids switch board exhaust hot air to be inhaled inside the switch board body.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a schematic diagram of the internal structure of the present utility model.

FIG. 3 is a schematic view of the structure of the upper or lower plate of the present utility model.

Fig. 4 is a schematic view of a partially enlarged structure of fig. 2 according to the present utility model.

Fig. 5 is a schematic view of the structure of the filter element of the present utility model.

Fig. 6 is a schematic structural view of the absorbent member of the present utility model.

Fig. 7 is a schematic diagram of a movable connection structure of an air inlet cover plate of the present utility model.

The drawing is marked: 1-a power distribution cabinet body; 2-an air inlet pipeline; 3-an exhaust pipeline; 4-a filter element; 40-filtering net; 41-outer end plate one; 42-first gasket; 43-tail plate; 44-magnet one; 5-a moisture-absorbing component; 50-a box body; 51-magnet II; 52-opening; 53-slot; 54-plugboards; 55-an outer end plate II; 56-first clamping plate; 57-second clamping plate; 58-second sealing gasket; 6-sliding rails; 7-an air inlet cover plate; 8-connecting rods; 9-mounting plates; 10-sliding blocks; 11-a first fixed block; 12-fixing a second block; 13-gear one; 14-gear II; 15-gear three; 16-an electric motor; 17-a bidirectional screw; 18-supporting feet; 19-a cabinet door; 20-an air outlet cover plate; 21-a fixed plate; 22-connecting plates; 23-output shaft; 24-an electric telescopic rod; 25-an air inlet; 26-an inlet fan; 27-a heater; 28-wind dispersing plate; 280-air dispersing holes; 29-upper plate; 30-upper magnet; 31-lower plate; 32-lower magnet; 33-an exhaust outlet; 34-exhaust fan; 35-an exhaust pipe orifice; 36-water outlet holes; 37-separator; 38-an inner air outlet; 39-baffle.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the following detailed description is given with reference to the accompanying drawings and the detailed description. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit or scope of the utility model, which is therefore not limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "mounted" to another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-7, a dampproof heat dissipation power distribution cabinet comprises a power distribution cabinet body 1, wherein four supporting feet 18 are arranged at the bottom of the power distribution cabinet body, and a cabinet door 19 is arranged at the front side of the power distribution cabinet body. The top and the left side wall of switch board body 1 are provided with the air inlet pipeline 2 that is L type structure and set up, the air inlet port of air inlet pipeline 2 is located its bottom, the bottom both sides of air inlet pipeline 2 are provided with slide rail 6 respectively, slide rail 6 sliding connection has air inlet apron 7, air inlet apron 7 moves about along the slide rail. The power distribution cabinet is characterized in that two mounting plates 9 are arranged at intervals at the bottom of the power distribution cabinet body 1, two bidirectional screws 17 are rotatably connected between the mounting plates, two sliding blocks 10 are connected to the bidirectional screws 17 in a threaded mode, one side, close to the air inlet cover plate 7, of each sliding block 10 is provided with a second fixing block 12, the second fixing blocks 12 are hinged to one end of the connecting rod 8, two first fixing blocks 11 are respectively arranged on two sides of the inner end portion of the air inlet cover plate 7, and the other end portion of the connecting rod 8 is rotatably connected with the first fixing blocks 11. One side end part of the bidirectional screw 17 penetrates through the mounting plate 9 and is fixedly provided with a first gear 13, a fixed shaft is arranged on one side of the mounting plate 9, which is positioned on the first gear 13, the fixed shaft is rotationally connected with a second gear 14, and the first gear 13 is in meshed connection with the second gear 14; a motor 16 is fixed on the inner side of one end, far away from the first gear 13, of the mounting plate 9, a driving shaft of the motor 16 penetrates through the mounting plate 9 and is fixedly provided with a third gear 15, and the third gear 15 is in meshed connection with the second gear 14. When the motor works, the driving gear III 15 rotates, the gear III 15 rotates to drive the gear II 14 to rotate, the gear II 14 rotates to drive the gear I13 to rotate, so that the bidirectional screw 17 rotates, the sliding block 10 can move on the bidirectional screw, the air inlet cover plate 7 is driven to move along the sliding rail 6, and the air inlet port of the air inlet pipeline 2 is opened or closed. The motor 16 is arranged on the inner side of the mounting plate 9, shielding and rain prevention of the motor 16 are achieved to a certain extent, and normal operation of the motor 16 is guaranteed.

The top of switch board body 1 is provided with air intake 25, air intake 25 with intake stack 2 intercommunication, air intake 25 is provided with air inlet fan 26, starts air inlet fan 26 and can introduce the outside cold wind of switch board body 1 into inside switch board body 1 from intake stack 2 bottom through air intake 25. The inside top of switch board body 1 is provided with the air-dispersing plate 28 of arc structure, a plurality of evenly distributed's air-dispersing hole 280 has been seted up to the air-dispersing plate 28, and the air conditioning can follow the air-dispersing hole 280 of air-dispersing plate 28 and get into in the switch board, evenly distributed makes the switch board body heat dissipation even in switch board body 1. Preferably, the top of the power distribution cabinet body 1 is provided with a heater, and under the condition that the external environment is damp, heat generated by the heater 27 is blown to the inside of the power distribution cabinet body 1 under the action of the air inlet fan 26 to dehumidify and dry the air.

An exhaust pipeline 3 which is arranged in an L-shaped structure is arranged at the bottom of the power distribution cabinet body 1 and on the side wall of the other side far away from the air inlet pipeline; the bottom of switch board body 1 is provided with air exit 33, air exit 33 with exhaust pipe 3 intercommunication, air exit 3 is provided with exhaust fan 34, top one side of exhaust pipe 3 is provided with exhaust pipe mouth 35. The top surface of the top of the exhaust pipeline 3 is vertically provided with a baffle 39, the inner side of the baffle 39 is provided with a baffle 37 with an L-shaped structure, the baffle 37 is fixed on the top of the exhaust pipeline 3 and the outer side wall of the baffle, and the top of the baffle 37 is provided with an inner air outlet 38. The bottom of the partition plate 37 is in an arc-shaped structure, the side wall of the exhaust pipeline 3 is provided with a water outlet hole 36, and the water outlet hole 36 is positioned on one side of the bottom of the partition plate 37. When the heater 27 is started to dehumidify and dry the inside of the power distribution cabinet body 1, heat generated by the heater 27 is quickly discharged out of the power distribution cabinet under the action of the exhaust fan 34, and cannot gather in the inside of the power distribution cabinet body 1, so that the use of the power distribution cabinet is not affected. When the rainwater is met, the baffle 39 blocks the rainwater entering from the exhaust pipe opening 35, the rainwater falls to the bottom of the partition plate 37, and is discharged from the water outlet 36 under the guiding action of the arc-shaped bottom of the partition plate 37, and the exhaust pipe 3 cannot generate accumulated water.

The exhaust pipe orifice 35 is movably provided with an air outlet cover plate 20; the top both sides of exhaust pipe 3 are provided with fixed plate 21 respectively, and two the outer tip of fixed plate 21 is outstanding exhaust pipe 3 outside rotates and is connected with air-out apron 20, the top outside of air-out apron 20 is fixed with connecting plate 22, the inside of air inlet pipe 2 is provided with electric telescopic handle 24, its output shaft 23 run through the top lateral wall of air inlet pipe 2 and with connecting plate 22 rotates to be connected. The electric telescopic rod 24 works to drive the output shaft 23 to move left and right, so that the air outlet cover plate 20 is driven to rotate on the fixed plate 21 to open or close the air exhaust pipe orifice 35.

As shown in fig. 1-2, the air intake duct 2 is provided with a lower plate 31 and an upper plate 29 with a zigzag structure from bottom to top, two insertion openings corresponding to the positions of the lower plate 31 and the upper plate 29 are formed in the front side of the air intake duct 2, and a filter component 4 and a moisture absorption component 5 located at the top of the lower plate 31 and the top of the upper plate 29 are respectively inserted through the insertion openings.

As shown in fig. 5, the filter element 4 includes a filter 40, an outer end plate 41 is fixed to an outer end of the filter 40, a tail plate 43 is fixed to an inner end of the filter, and a gasket 42 is provided on an inner side of the outer end plate 41. The outer side surface of the tail plate 43 is fixed with a magnet 44, and the inner wall of the air inlet pipeline 2 is fixed with a lower magnet 32. When the filter element 4 is inserted into the air inlet pipeline 2 through the insertion opening where the lower layer plate 31 is positioned, the first magnet 44 is magnetically connected with the lower magnet 32, the first outer end plate 41 is clamped at the outer side of the insertion opening, and the first sealing gasket 42 enables the first outer end plate 41 to be tightly attached to the side wall of the air inlet pipeline 2, so that the filter element 4 is tightly connected with the air inlet pipeline 2.

As shown in fig. 6, the moisture absorbing component 5 includes a box 50, the bottom of the box 50 is a net structure, an opening 52 is provided at the top of the box 50, and a drying bag, which is a lime bag, may be placed in the box 50. A slot 53 is arranged on one side of the box body, and the slot 53 can be inserted into a plugboard 54 with a net structure positioned at the top of the box body 50; an outer end plate II 55 is fixed at the outer end of the box body 50, and a sealing gasket II 58 is arranged on one side of the inner side surface of the outer end plate II 55. Further, a first clamping plate 56 is transversely arranged at the top of the second outer end plate 55, a second clamping plate 57 with an L-shaped structure is arranged at one end, away from the second outer end plate 55, of the box body 50, the top of the first clamping plate 56 and the top of the second clamping plate 57 are located on the same plane, and moisture absorption sponge can be placed at the bottoms of the first clamping plate 56 and the second clamping plate 57. The second magnet 51 is disposed on a side of the box 50 away from the second outer end plate 55, and the upper magnet 30 is disposed on an inner wall of the air intake duct 2. When the moisture absorption part 5 is inserted into the air inlet pipeline 2 through the insertion opening where the upper layer plate 29 is positioned, the magnet II 51 is magnetically connected with the upper magnet 30, the outer end plate II 55 is clamped at the outer side of the insertion opening, and the sealing gasket II 58 enables the outer end plate II 55 to be tightly attached to the side wall of the air inlet pipeline 2, so that the moisture absorption part 5 is tightly connected with the air inlet pipeline 2.

The utility model further comprises a temperature sensor and a humidity sensor which are arranged in the power distribution cabinet body and are respectively used for monitoring the temperature and the humidity in the power distribution cabinet. The temperature sensor and the humidity sensor are respectively connected with the input end of the controller, and the output end of the controller is respectively and electrically connected with the inlet fan, the exhaust fan, the electric telescopic rod, the electric heater and the motor. The controller is also connected with a storage battery.

The working principle of the utility model is as follows: under the switch board normal atmospheric temperature state, air inlet apron 7 lid is established at the air inlet port of air inlet pipeline 2, and air outlet apron 20 lid is established at exhaust pipe mouth 35, reduces the possibility that foreign matter, dust get into inside switch board body 1, realizes the effect of isolated dust. When the internal temperature of the power distribution cabinet body 1 is too high, the motor 16 and the electric telescopic rod 24 are started, the air inlet port of the air inlet pipeline 2 and the air exhaust pipe opening 35 of the air exhaust pipeline 3 are opened, the air inlet fan 26 and the air exhaust fan 34 are simultaneously opened, the air inlet fan 26 pumps external cold air into the air inlet pipeline 2 from the bottom of the power distribution cabinet, dust is filtered through the filtering component 4, moisture in cold air is adsorbed by the drying bag and the moisture absorption sponge of the moisture absorption component 5, the dry cold air is blown into the power distribution cabinet body 1 through the air inlet 25, the cold air is uniformly blown into the power distribution cabinet body 1 through the dispersing effect of the air dispersing plate 28, the air absorbing heat is pumped by the air exhaust fan 34 and is sent out to the top of the power distribution cabinet through the air exhaust pipeline 3, and the exhausted hot air rises upwards to cool the power distribution cabinet body 1 well. When the air is moist, start the heater 27, cooperate into fan 26, blow into the inside of switch board body 1 with hot-blast, dehumidify and when drying, the heat that the heater 27 produced is discharged outside the switch board very soon under the effect of exhaust fan 34, can not gather in the inside of switch board body 1.

The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (10)

1. The dampproof heat dissipation power distribution cabinet is characterized by comprising a power distribution cabinet body, wherein an air inlet pipeline which is arranged in an L-shaped structure is arranged at the top and one side wall of the power distribution cabinet body, and an air exhaust pipeline which is arranged in an L-shaped structure is arranged at the bottom and the other side wall of the power distribution cabinet body; the air inlet port of the air inlet pipeline is positioned at the bottom end part of the air inlet pipeline, and the air inlet port is movably provided with an air inlet cover plate; the top of the power distribution cabinet body is provided with an air inlet which is communicated with the air inlet pipeline, and the air inlet is provided with an air inlet fan; the power distribution cabinet comprises a power distribution cabinet body, and is characterized in that an air outlet is formed in the bottom of the power distribution cabinet body and communicated with an air exhaust pipeline, an air exhaust fan is arranged at the air outlet, an air exhaust pipe orifice is formed in one side of the top of the air exhaust pipeline, and an air outlet cover plate is movably arranged at the air exhaust pipe orifice; the air inlet pipeline is respectively provided with a lower layer plate and an upper layer plate with a reverse-character structure from bottom to top, and the air inlet pipeline is respectively inserted with a filter component and a moisture absorption component which are positioned at the top of the lower layer plate and the top of the upper layer plate.

2. The dampproof and heat-dissipating power distribution cabinet according to claim 1, wherein the filtering component comprises a filter screen, an outer end plate I is fixed at the outer end part of the filter screen, a tail plate is fixed at the inner end part of the filter screen, and a sealing gasket I is arranged on one side of the inner side surface of the outer end plate I.

3. The dampproof and heat-dissipating power distribution cabinet according to claim 1, wherein the moisture absorption part comprises a box body, an opening is formed in the top of the box body, a drying bag can be placed in the box body, a slot is formed in one side of the box body, and the slot can be inserted into a plugboard with a net-shaped structure positioned at the top of the box body; an outer end plate II is fixed at the outer end part of the box body, and a sealing gasket II is arranged on one side of the inner side surface of the outer end plate II.

4. A dampproof and heat-dissipating power distribution cabinet according to claim 3, wherein a first clamping plate is arranged at the top of the second outer end plate, a second clamping plate in an L-shaped structure is arranged at one end of the box body away from the second outer end plate, and moisture-absorbing sponge can be placed at the bottoms of the first clamping plate and the second clamping plate.

5. The dampproof and heat-dissipating power distribution cabinet according to claim 1, wherein a baffle is arranged on the top surface of the top of the exhaust pipeline, a baffle plate of an L-shaped structure fixed on the top of the exhaust pipeline and the side wall of the exhaust pipeline is arranged on the inner side of the baffle plate, and an inner air outlet is arranged on the top of the baffle plate.

6. The dampproof and heat-dissipating power distribution cabinet of claim 5, wherein the bottom of the partition plate is in an arc-shaped structure, the side wall of the exhaust pipeline is provided with a water outlet, and the water outlet is positioned on one side of the bottom of the partition plate.

7. The dampproof and heat-dissipation power distribution cabinet according to claim 1, wherein two mounting plates are arranged at intervals at the bottom of the power distribution cabinet body, a bidirectional screw is rotatably connected between the two mounting plates, two sliding blocks are connected to the bidirectional screw in a threaded mode, a fixing block II is arranged on one side of each sliding block, one end of a connecting rod is hinged to the fixing block II, two fixing blocks I are respectively arranged on two sides of the inner end portion of the air inlet cover plate, the other end portion of the connecting rod is rotatably connected with the fixing blocks, one side end portion of the bidirectional screw penetrates through the mounting plates and is fixedly provided with a gear I, a fixing shaft is arranged on one side of the mounting plate, the fixing shaft is rotatably connected with a gear II, and the gear I is in meshed connection with the gear II; the mounting plate is far away from the inboard motor that is fixed with of one end of gear one, the drive shaft of motor runs through the mounting plate and is fixed with the gear three, the gear three with gear two meshing is connected.

8. The dampproof and heat-dissipating power distribution cabinet of claim 7, wherein the two sides of the bottom end of the air inlet pipeline are respectively provided with a sliding rail, and the air inlet cover plate moves along the sliding rails.

9. The dampproof and heat-dissipating power distribution cabinet according to claim 1, wherein fixing plates are respectively arranged on two sides of the top of the air exhaust pipeline, the outer end parts of the fixing plates are rotationally connected with the air outlet cover plate, the top of the air outlet cover plate is fixedly provided with a connecting plate, an electric telescopic rod is arranged in the air inlet pipeline, and an output shaft of the electric telescopic rod penetrates through the side wall of the air inlet pipeline and is rotationally connected with the connecting plate.

10. The dampproof and heat-dissipation power distribution cabinet according to claim 1, wherein the inner top of the power distribution cabinet body is provided with an air dispersing plate with an arc-shaped structure, and the air dispersing plate is provided with a plurality of uniformly distributed air dispersing holes.